voice-activity-detector.cc
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// sherpa-onnx/csrc/voice-activity-detector.cc
//
// Copyright (c) 2024 Xiaomi Corporation
#include "sherpa-onnx/csrc/voice-activity-detector.h"
#include "sherpa-onnx/csrc/macros.h"
#include "sherpa-onnx/jni/common.h"
namespace sherpa_onnx {
static VadModelConfig GetVadModelConfig(JNIEnv *env, jobject config) {
VadModelConfig ans;
jclass cls = env->GetObjectClass(config);
jfieldID fid;
// silero_vad
fid = env->GetFieldID(cls, "sileroVadModelConfig",
"Lcom/k2fsa/sherpa/onnx/SileroVadModelConfig;");
jobject silero_vad_config = env->GetObjectField(config, fid);
jclass silero_vad_config_cls = env->GetObjectClass(silero_vad_config);
fid = env->GetFieldID(silero_vad_config_cls, "model", "Ljava/lang/String;");
auto s = (jstring)env->GetObjectField(silero_vad_config, fid);
auto p = env->GetStringUTFChars(s, nullptr);
ans.silero_vad.model = p;
env->ReleaseStringUTFChars(s, p);
fid = env->GetFieldID(silero_vad_config_cls, "threshold", "F");
ans.silero_vad.threshold = env->GetFloatField(silero_vad_config, fid);
fid = env->GetFieldID(silero_vad_config_cls, "minSilenceDuration", "F");
ans.silero_vad.min_silence_duration =
env->GetFloatField(silero_vad_config, fid);
fid = env->GetFieldID(silero_vad_config_cls, "minSpeechDuration", "F");
ans.silero_vad.min_speech_duration =
env->GetFloatField(silero_vad_config, fid);
fid = env->GetFieldID(silero_vad_config_cls, "windowSize", "I");
ans.silero_vad.window_size = env->GetIntField(silero_vad_config, fid);
fid = env->GetFieldID(silero_vad_config_cls, "maxSpeechDuration", "F");
ans.silero_vad.max_speech_duration =
env->GetFloatField(silero_vad_config, fid);
fid = env->GetFieldID(cls, "sampleRate", "I");
ans.sample_rate = env->GetIntField(config, fid);
fid = env->GetFieldID(cls, "numThreads", "I");
ans.num_threads = env->GetIntField(config, fid);
fid = env->GetFieldID(cls, "provider", "Ljava/lang/String;");
s = (jstring)env->GetObjectField(config, fid);
p = env->GetStringUTFChars(s, nullptr);
ans.provider = p;
env->ReleaseStringUTFChars(s, p);
fid = env->GetFieldID(cls, "debug", "Z");
ans.debug = env->GetBooleanField(config, fid);
return ans;
}
} // namespace sherpa_onnx
SHERPA_ONNX_EXTERN_C
JNIEXPORT jlong JNICALL Java_com_k2fsa_sherpa_onnx_Vad_newFromAsset(
JNIEnv *env, jobject /*obj*/, jobject asset_manager, jobject _config) {
#if __ANDROID_API__ >= 9
AAssetManager *mgr = AAssetManager_fromJava(env, asset_manager);
if (!mgr) {
SHERPA_ONNX_LOGE("Failed to get asset manager: %p", mgr);
}
#endif
auto config = sherpa_onnx::GetVadModelConfig(env, _config);
SHERPA_ONNX_LOGE("config:\n%s", config.ToString().c_str());
auto model = new sherpa_onnx::VoiceActivityDetector(
#if __ANDROID_API__ >= 9
mgr,
#endif
config);
return (jlong)model;
}
SHERPA_ONNX_EXTERN_C
JNIEXPORT jlong JNICALL Java_com_k2fsa_sherpa_onnx_Vad_newFromFile(
JNIEnv *env, jobject /*obj*/, jobject _config) {
auto config = sherpa_onnx::GetVadModelConfig(env, _config);
SHERPA_ONNX_LOGE("config:\n%s", config.ToString().c_str());
if (!config.Validate()) {
SHERPA_ONNX_LOGE("Errors found in config!");
return 0;
}
auto model = new sherpa_onnx::VoiceActivityDetector(config);
return (jlong)model;
}
SHERPA_ONNX_EXTERN_C
JNIEXPORT void JNICALL Java_com_k2fsa_sherpa_onnx_Vad_delete(JNIEnv * /*env*/,
jobject /*obj*/,
jlong ptr) {
delete reinterpret_cast<sherpa_onnx::VoiceActivityDetector *>(ptr);
}
SHERPA_ONNX_EXTERN_C
JNIEXPORT void JNICALL Java_com_k2fsa_sherpa_onnx_Vad_acceptWaveform(
JNIEnv *env, jobject /*obj*/, jlong ptr, jfloatArray samples) {
auto model = reinterpret_cast<sherpa_onnx::VoiceActivityDetector *>(ptr);
jfloat *p = env->GetFloatArrayElements(samples, nullptr);
jsize n = env->GetArrayLength(samples);
model->AcceptWaveform(p, n);
env->ReleaseFloatArrayElements(samples, p, JNI_ABORT);
}
SHERPA_ONNX_EXTERN_C
JNIEXPORT bool JNICALL Java_com_k2fsa_sherpa_onnx_Vad_empty(JNIEnv * /*env*/,
jobject /*obj*/,
jlong ptr) {
auto model = reinterpret_cast<sherpa_onnx::VoiceActivityDetector *>(ptr);
return model->Empty();
}
SHERPA_ONNX_EXTERN_C
JNIEXPORT void JNICALL Java_com_k2fsa_sherpa_onnx_Vad_pop(JNIEnv * /*env*/,
jobject /*obj*/,
jlong ptr) {
auto model = reinterpret_cast<sherpa_onnx::VoiceActivityDetector *>(ptr);
model->Pop();
}
SHERPA_ONNX_EXTERN_C
JNIEXPORT void JNICALL Java_com_k2fsa_sherpa_onnx_Vad_clear(JNIEnv * /*env*/,
jobject /*obj*/,
jlong ptr) {
auto model = reinterpret_cast<sherpa_onnx::VoiceActivityDetector *>(ptr);
model->Clear();
}
SHERPA_ONNX_EXTERN_C
JNIEXPORT jobjectArray JNICALL
Java_com_k2fsa_sherpa_onnx_Vad_front(JNIEnv *env, jobject /*obj*/, jlong ptr) {
const auto &front =
reinterpret_cast<sherpa_onnx::VoiceActivityDetector *>(ptr)->Front();
jfloatArray samples_arr = env->NewFloatArray(front.samples.size());
env->SetFloatArrayRegion(samples_arr, 0, front.samples.size(),
front.samples.data());
jobjectArray obj_arr = (jobjectArray)env->NewObjectArray(
2, env->FindClass("java/lang/Object"), nullptr);
env->SetObjectArrayElement(obj_arr, 0, NewInteger(env, front.start));
env->SetObjectArrayElement(obj_arr, 1, samples_arr);
return obj_arr;
}
SHERPA_ONNX_EXTERN_C
JNIEXPORT bool JNICALL Java_com_k2fsa_sherpa_onnx_Vad_isSpeechDetected(
JNIEnv * /*env*/, jobject /*obj*/, jlong ptr) {
auto model = reinterpret_cast<sherpa_onnx::VoiceActivityDetector *>(ptr);
return model->IsSpeechDetected();
}
SHERPA_ONNX_EXTERN_C
JNIEXPORT void JNICALL Java_com_k2fsa_sherpa_onnx_Vad_reset(JNIEnv * /*env*/,
jobject /*obj*/,
jlong ptr) {
auto model = reinterpret_cast<sherpa_onnx::VoiceActivityDetector *>(ptr);
model->Reset();
}
SHERPA_ONNX_EXTERN_C
JNIEXPORT void JNICALL Java_com_k2fsa_sherpa_onnx_Vad_flush(JNIEnv * /*env*/,
jobject /*obj*/,
jlong ptr) {
auto model = reinterpret_cast<sherpa_onnx::VoiceActivityDetector *>(ptr);
model->Flush();
}